Perhaps you know that new-onset inverted nipples in a woman can signal breast cancer, but what’s going on when a baby is born with inverted nipples?
“Inverted nipples in an infant are very common and no cause for concern,” says Dr. Charnetta Colton-Poole, MD, a board certified pediatrician based in Atlanta, GA.
“The nipples usually correct without incident by one year of age.
“In the rare instance that correction does not occur, it is usually only a concern in females of child-bearing age who may choose to breast-feed, as latching on [by the baby] would be difficult.
“Overall, this is considered a benign condition of minimal clinical significance in the newborn period.”
With 15+ years in the medical field, 
